Marvin JS can import all the commonly used molecule file formats.
Marvin JS handles MDL Molfiles V2000 (.mol) and ChemAxon Marvin Documents (.mrv) as input files natively, and other file types can also be imported if the appropriate web service is available.
Natively Marvin JS supports the MRV and MDL Mol(V2000) formats. Other export formats also available via web service.
ChemAxon Marvin Document (MRV)
MDL Molfile (V2000)
WebService is needed
ChemAxon Extended SMARTS
HTML or XML
MDL Molfile V3000
MDL RXNfile V3000
MDL RGfile V3000
ChemAxon Compressed Molfile
ChemAxon Compressed SDfile
CDX File Format (Available via Open file option, or Drag & Drop)
SKC File Format (Available via Open file option, or Drag & Drop)
How to import by Paste source function
Open the text based structure file with a text editor, select all, and copy the file contents to the clipboard then paste it into the input area.
Above the text field you can select the appropriate file format from a drop-down list, or you can choose the < auto recognize> option.
Finally, pressing the Import button loads the structure on the canvas.
Drag & Drop
You can also open your molecule file by choosing it in your file system, and click and dragging than dropping it onto the Marvin JS canvas.